Insulated connecter



Oct. 14. 1924- L. STEINBERGER INSULATED GONNECTIER Filed May 5 1919 a Rafa/gala:

( Circa/0r 4 0?? Sfekbe/yer Ila/M d 41101111 Patented Oct. 14, 1924.

UNITED STATES PATENT OFFICE.

LOUIS STEINZBERGER, OF BROOKLYN, NEW YORK.

INSULATED Application filed May 5,

T 0 all whom it may concern:

Be it known that I, LOUIS S'rmNBERcER, a citizen of the United States, and a resident of the borough of Brooklyn, city and State of New York, have invented certain new and useful Improvements in Insulated Connecters, of which the following is a specification.

"This invention relates to improvements in insulated connecters of the condenser type and has particular reference to structures byline'an's of which the electrical stresses and strains will be redistributed within the body portion.oftheinsulator, and the method'of its manufacture.

One, of the objects of the invention, therefore, is to provide means in the insulator body which will cause redistribution of the electrical stresses and strains within the body portion of the. insulator.

Another object is to provide an insulated conne ter having a conductor molded therein axially thereof and provided with a series of condenser. rings surrounding each end of the conductor, the said rings being wholly embedded within the body of the insulator. Another object of the invention is to provideiaseriesof graded rings embedded withinthe} insulator body, the rings being arrangd n groups at each end of the body and graded with respect to their diameters. Another object is to provide a series of graded rings embedded within the insulator body, the rings being graded with respect to the areas of their cross sections.

Another object is to provide a series of graded rings embedded within the insulator body, the rings being graded with respect to the two dimensions of their cross sections. Another object is to provide a series of gradedrings embedded within the insulator body, the rings being graded with respect to their diameters and to the two dimensions of their cross sections, the ring of larger diameter and larger cross section being nearest the center, the ring of lesser diameter and lesser cross section being at the end, the intermediate rings of the groups being graded accordingly.

Another object is to provide a support near the central portion of the body, said support, also acting to redistribute the stresses and strainsin a plurality of zones withinfthe body of insulating material. Another objectof the invention is to provide means for distributing the heated areas connnc'rnn.

1919. Serial No. 294,698.

in a plurality of Zoneswithin insulation and effect a rapid cooling.

Other objects will appear from'tlie here n after description and the subjoined-"claims. Referring to the drawing in whiclift-he samereference character indicates the'same part in the several views: I

Fig. 1 is a vertical cross section of'ian'finsulated connecter embodying my inventi" the conductor being shown 'inelevation.

Fig. 2'is a cross section o'nline 2 2 of Fig. 1 l 54 5. 1;

Fig. of rings which'may I I In the drawings, the body ofjfin niacin material is represented as having core 10 and an outerlayer molded thereto during the ermine fact'ure to be hereinafter described,,12 is the conductor which consists of a solidrodiof metal. I 13, 14, 15 andia, 14; and15'. are the condenser rings which' are embedded "within the body of insulating mat/anal fieae r iia thereof and which surroundtlie'condu'ctor 12; The group'composedf of the rings 13',"14 and 15 is arranged withinthe bodyo f insuat one end of the insulated coniifecter, and the rings 13', 14 and'15.are'similarlyar-- ra'ngedat the other end of the insulated con necter. Each ring of each group is"positioned substantially the same'distance'from its adjacent ring and the rin comprising each group are similarly gra ed,'thatis to say, the ring of each group which is nearest the center of the insulated connecter has the largest diameter, both externally andinternally, of any ring "of its respective group; the ring next thereto being the central ring of each group is less in diameter both externally and internally, than the previous'ring, and the ring atthe end of each groupnearest the end of the body of insulating material is less in diameter both externally and internally of any ring of its group.

These rings are also graded'intwo other respects, namely, the ring of lar est diameter has the greatest cross sectiona "area, the ring of least diameter has thesmallest'cross sectional area, and the cross sectional areas of the rings of intermediate diameters are correspondingly graded. So also are the rings graded in cross section with respect to their two dimensions; that is, both the height or length, the width .or thickness of 3 is a detail showing foims the cross section of the ring nearest the g h, of, eu

skilled in the art may center "are? greater than ,theheight {and width respectively of the ring next thereto of that group, and in height and width oh the cross sectionfotthe last mentioned ring is greater than the height sections of the rings at the end of the group. The position of the riiigs' and the graded arrangement and vform thereof are clearly ilhistrated iii the drawi s and further details are therefore regar ed as unnecessary in'thi' written description in order that one clearly understand how to construct and use the invention.

"It is preferred't'o make .the ring of metal in ribbon form, asshown in Fig. 1, the corners hpwever being slightly rounded alit is within the scope of m invention to form the rings either enti'rel'y of flat side which are either" rectanular-,or square in cross section, or to make t iei'n' either war or; round, fcross section, as illustrated iniF g. 3', the rings, however,

. heel' hga d being rafledfin-acoordance with the instructions a jbove'fset fortln "In the event thatthe rihgs'areeither round in cross section or square in cross section, the rings are also r'aded with respect to their diameters and t cross sectional areas.

clea'rly "llustrated in the drawings, thereiisflprovided at the' central portion of I of insulating material A, a sleeve 4Uwhic consists of two flanges which extend in opposite directions from the ring shaped; supporting portion 45. The sleeve 4:0 is secured to the body of. insulating material duringthe molding of the insulating material within the sleeve so that the metallic sleeve 40 surrounds the central portion of the body of insulating material and a surface thereof is thus in contact with the surrounding atmosphere so as to afford an efficient means for heat dissipation.

The rojecting flange 4:5 is provided with b'olt ho es 45- through which bolts may pass by means of which the supporting sleeve and ring and consequently the insulated connecter is secured to the support (not shown) which may be the roof of a house, the cover of a tank, or the like as well understood in the art.

The sleeve 40 is substantially in the form illustrated in the drawing and each flange is offset as at 412. and 43 from the central inner s urface,'bei'ng curved inwardly as at 18 and I9 and isiformed at their edges with ribs or beads 17 and 17', these ribs being rounded and of such a form and shape that the insulating material of the body of the connecter at each edge of the sleeve impinges upon therib at-a point about midway thereof as clearly shown at 18' and 19 so as to a 0rd an effective hold between the flange and the insulator body.

From this construction it is seen that the like manner the and width respectively ofthe-cross upperand lower portions'of the supporting ring are nearer the conductor rod than is the center of the inner surface of the supporting ring. A well understood the voltage has a tendency to break through the insulating material and b' means of my improved construction just escribed, as the electric stress or lines'of force tend to leave the collars 42 and 43 where they are nearest the conductor I rod 12 they will extend through or from the zones E and' F from which they may be more readil" distributed throughout the insulator rat er than concentrating toward the central zone of the supporting ring; As

the flanged sleeve or thimb e is placed on the outside of the body of insulating material it thus contacts with the air, causing a'dissipation of the heat created in-the zones E and FL' The "advanta e of this particular construction is due to t e fact that the hues of stress" and strains will be distributed and consequently the heatedfzones will be enlarged and the heat readily dissipatedina plurality of places,

I Th conductor rod is roughened near its ends at 30 and 31 so as to afford an efficient holding surface for the insul'ating material when'it' is molded therearound. The, eittreme ends of the conductor rod are screwthre'aid'ed at 32 and 33to aflord means for connecting the leads thereto, as well understood;

The manufacture of the improved'insulated connector as above described is accomplishedas follows The conductor rod is fixed in an upright position'and the groups of rings positioned in graded relation to each other as hereinabove described, each group surrounding the respective ends of the conductor. The supporting sleeve and ring 40 and 45 are also positioned centrally of each group of rings. The insulating material is then molded around the conductor and around the condenser rings and within the supporting ring 40 to form the core body 10, as clearly shown; After forming the body 10 with the metal connections, as shown, the insulator body is then completed by moldin therearound' the portion 11 which is molded into the shape shown, having alternate circular ribs 50 and grooves 51 on its surface, as clearly shown.

A The insulating material used may be any suitable moldable material, but I prefer to use the insulating material well known in the'art as electrose.

The portions 10 and 11 of the insulator body may be formed of the same (grade of electrose, or the two portions 10 an 11 may be formed of electrose of different grades;

From the above construction it is seen that the electrical stresses and strains will be distributed and the heating eflects which may be created within the body part of the insulator by the changes in the electric stress, will be distributed and dissipated to the air almost instantly, there being a large metal surface exposed to the air for that purpose. The rings, 12, 13, 14, 12, 13 and 14 serve to uniformly distribute the lines of the flux and static field formed on the surface of the insulator and prevent concentration of the electrostatic field in paths between the exposed portion of the conductor 12 and the supporting ring 40. The effect of the rings is somewhat similar in this respect to the external static or flux control shields used for this purpose. Therefore a redistribution of the electrical stresses and strains is accomplished by the groups of metal rings of varying sizes and varying heights and widths which are embedded at each end of the insulator body, as above set forth. It is to understood that the relative positions of the rings to each other may be varied somewhat from the equidistant position illustrated, the proper adjustments being made in the proportions of the rings.

As changes of construction could be made within the scope of my invention, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

Having described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a device of the kind described, a body of insulating material, a conductor molded therein and extending therethrough, two groups of metallic rings, the several rings of each group having diflerent surface areas, a group surrounding the con ductor at each end, the rings of each group being progressively graded with respect to the areas of their cross sections.

2. In a device of the kind described, a body of insulating material, a conductormolded therein and extending therethrough, two groups of metallic rings, the several rings of each group having different surface areas, a group surrounding the conductor at each end, the rings of each group being progremively graded with respect to the heights of their cross sections.

3. In a device of the kind described, a body of insulating material, a conductor molded therein and extending therethrough, two groups of metallic rings, the several rings of each group having different surface areas, a roup surrounding the conductor at each en the rings of each group being progressively graded with respect to the widths of their cross sections.

4. In a device of the kind described, a body of insulating material, a conductor secured thereto and extending axially therethrough, a metallic supporting ring surrounding said body of insulating material and spaced metallic rings of varying capacities embedded in said body of insulating material concentrically to the axis thereof to uniformly control and distribute the static charge.

In witness whereof, I have hereunto set my hand at the borough of Manhattan, city and State of New York, this second day of May, 1919.

LOUIS STEINBERGER.

In presence of ZITA M. GRAHAM. a 

